n.
25A0; on tenterhooks IN SUSPENSE, waiting with bated breath; anxious, nervous, nervy, apprehensive, worried, worried sick, on edge, edgy, tense, strained, stressed, agitated, restless, worked up, keyed up, with one's stomach in knots, with one's heart in one's mouth, like a cat on a hot tin roof; informal with butterflies in one's stomach, jittery, jumpy, twitchy, in a state, uptight; N. Amer. informal spooky, squirrelly.